Brick press-box



(No Model.)

G. H. THOMPSON.

Brick Press Boxes. No. 231,508. Patented Aug. 24,1880.

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UNITED STATES PATENT OFFICE GEORGE H. THOMPSON, OF FROSTBURG, MARYLAND.

BRICK PRESS-BOX.

SPECIFICATION forming part of Letters Patent No. 231,508, dated August 24, 1880. Application filed June 12, 1880. (No model.)

To all whom it may concern:

Be it known that I, GEO. ELTHOMPSON, of Frostburg, in the county of Alleghany and State of Maryland, have invented a new and useful Improvement in Brick Press-Boxes, of which the following is a specification.

Heretofore the liners of press-boxes have been fastened to the box with rivets-a method necessitating much labor and expense and requiring a special box for every shape and size of brick made.

The object of my invention is, first, to pro vide a box by which the liners can be quickly adjusted to or removed therefrom without the old method of riveting; second, to make a single box answer the purpose of many boxes by combining with it liners of various figures and sizes, with which an indefinite variety ot'shapes can be made, thus saving the expense of the old method.

The accompanying drawings are perspective representations of my invention, Figure 1 showin g a top, side, and end view of a box, and Fig. 2 showing a section of the bottom of the same. Figs. 3, 4-, 5. 6, 7, 8, 9, 10, 11 represent the liners used in pressing the standard shapes of fire-clay and red brick; but the box is adapted for making an indefinite number of shapes by supplyingotherliners. (Not hererepresented.) These liners may be made of steel, cast-iron, carbon-bronze, 860.

In Fig. 1, D are vertical slots cut in the ends of the box three-eighths of an inch deep, onehalf inch wide, and from top to bottom 5 and AB C are set-screws in the ends and sides of the box, five-eighths of an inch thick, with narrow thin heads, and having their points projectingone-eighth of an inch into the inside of the box when screwed up. The heads of the serewsAin the ends of the box must be countersunk, so as not to interfere with the arms of the press.

For making square brick two side liners, like the one shown in Fig. 3, one-half inch thick and of the usual width, are fitted into the slots D, one on each side of the box, and made fast by the screws B on either side. These liners have grooves F upon both of their sides, one-fourth of an inch wide and one-sixteenth of an inch deep, and when in a vertical position in the box the outer edge of the grooves should be on a plane with the ends of the box upon the inside.

The ends of the box are lined by sliding plain liners, one-fourth of an inch thick, like the one shown in Fig. 11, between the groovesin the side liners, and close to the box upon the inside. The end liners are held by the screws A and by the side liners bearing against their ends when screwed up. This set of plates is reversible, and may be worn upon all sides. They may be also worked three-sixteenths of an inch above the top of the box or level with it. The points ofthe screws 0 merely come against the side liners in the center of the box.

The plate E, (shown in Fig. 2,) riveted across the bottom of the box upon each end, supports the liners beneath.

Fig. 4 represents one of the side liners used in making soap-brick. They may varyin thickness to suit the desired width of the brick. The tenoned ends G are five-eighths of an inch long, only three-eighths of an inch of which enters the slots D in the box, which leaves the shoulders of the liners one-fourth of an inch from the end of the box upon the inside, and leaves a space for the end liners (one-fourth of an inch thick) to be neatly fitted between the shoulders and the inside end of the box. Thus fitted they are then firmly held by the setscrews upon the ends and sides of the box.

Fig. 5 represents one of the side liners for making key-brick. These are made of different dimensions also, to adapt them for making the various sizes of key-brick. The tenoned ends H are five-eighths of an inch long, and allow the end liners to be fitted to the side liners in a similar manner to those just doscribed for making soap-brick, and are held similarly by the screws.

The side liners shown in Figs. 6 and 7 are used together for making circle-brick, and may vary in dimensions for making different sizes. The one shown in Fig. 6 has a concave side, which shapes thelong side of this class of brick, and the one shown in Fig. 7 a convex side, which gives the shape to the short side of the brick. Wedge-shaped end liners, like the one shown in Fig. 10, are used with these liners.

The thin sides of the end liners are fitted to the ends of the concave liner in Fig. 6, and their thick ends arejoined to the liner in Fig. 7. The side liners are fitted to the slots 1) by means of the tenoned ends I and J, and are held by the screws B.

Fig. 8 represents a side liner used with one of the side liners shown in Fig. 3 and the end liner in Fig. 11, for makingjanib-brick. The tenoned end K is made to fit to the slots Din the box, and upon the end N a groove is cut, one-fourth of an inch wide and one-sixteenth of an inch deep, to which the end liner is fitted. This set of liners is held in the box, like those alread described.

Fig. 9 represents a sideliner, also used with the side liner shown in Fig. 3 and the end liners shown in Fig. 1], for making jamb-briek. The tenoned end L is made to tit to the slots D in the box, and the end 0 is grooved for the end liner shown in Fig. 11 to be fitted to it.

What I claim is 1. A press-box provided with interchange able liners for the manufacture of bricks.

2. A press-box for the manufacture of bricks having slots in its inner sides contiguous to the corners for receiving the ends of detachable liners, substantially as set forth and shown.

3. The combination, with a press-box hav ing slots in its inner sides, as shown, of detachable liners whose ends are adapted to fit in said slots and set-screws for securing the liners in place, as described.

The combination, with the press-box, of the reversible side liners (shown in Fig. 3) having vertical grooves on each side and the end liners adapted to fit in said grooves, as substantially described.

5. The combination of the support-plates E with the pressbox having vertical slots in its inner sides and the detachable liners adapted to slide in said slots, the plates being permanently attached to the ends of the box, all substantially as described.

6. Removable liners for brick press-boxes, composed ot'cast-iron, either chilled or not, substantially as described.

GEO. H. THOMPSON.

\Vitnesscs:

J. 11. KNODE, ALEX. PAUL. 

